Liner clamp for panel form walls



Jan. 30, 1940. Q a 30sec 2,188,400

LINER CLAMP FOR PANEL FORM WALLS Filed Dec. 13, 1937 2 Sheets-Sheet 1 Jan. 30, 1940. e. B. Bosco 2,188,400 LINER CLAMP FOR PANEL FORM WALLS File d Dec. 13, 1937 v 2 Sheets-Sheet 2 Ma ama f UNITED STATES 'PATE This invention relates to the general art of forms used in the erection of concrete walls, 001-- umns and the like, and more especially to forms of the well known type wherein the side and end is walls of the form are built up'of a series of rec-" tangular panels united edge to edge.

Informwalls of this type the panels are provided with rectangular bounding frames that project outwardly from the plane of the panel 10 facing, andadjacent limbs of adjacent frames 1 are temporarily bonded together by removable clamps of various sorts. fro stiffen and strengthen the wall to resist the lateral thrust of the wet concrete it is common to employ on the outer .15 side of the wall spaced horizontal andvertical liners, and a wedge-shaped-block co-acting with said member to tension the same. -.Sorhewhatsimilar clamps consisting of U-shaped rods-or- 5 wires have been employed for separately-bond-' ing the horizontal and vertical liners to the panel frames, as shown, for example, in patent to Anderson, No; 1,970,547, August-.21, 1984.

Among the objects of this invention are, to

90 provide an improved clamp that, in'slightly dif-' ferent forms, may beused either withwall panels having wooden frames or with wall panels having' angle iron frames to bond .the horizontal linersto said frames, and mayalsobeused to 8!! bond the horizontal and vertical at their points of intersection; to provide'al-cl'amp of very simple and inexpensive construction; to provide able to small irregularities or. variations-in the do thickness of the liners; to provide a clamp that, i

when applied, will stay put in its tensioned position and condition and cannot yield or slip; and,

generally, to provide a better clamp for the purposes above menioned than has heretofore been Approved embodiments of the invention are illustrated in the accompanying drawings, in

Fig. l is a perspective elevation of. a panelso type form wall employing panels having wooden bounding frames and vertical and longitudinal liners or stringers, and equipped with miniproved form liner clamps.' a v Fig. 2 is an enlarged fragmentary horizontal gg section taken on the line 2-2, of Figs, 1 and 3.

Q a horizontal liner ll.

Fig. 3 .is a front elevation as viewed from the a b t tm-z. Fig. 1 is a perspective detailoffthe formof wp-shown in Figs. {and 3' and in part in- Fig.5 is a fragmentary perspective detail showing edgewlse adjacent panels employing angle iron bounding frames, a horizontal liner, and a' form-of clamp for bonding the liner.to adjacent limbs of the bounding frames and also bonding l0 said limbs to each other. I

j Zi 'ig.v 6' is a fragmentary elevation as viewed from the left .of F18; 5 with the liner in trans- '-verse section.

' Fig. 7 is anisolated detail in top plan view of the clamp shown inl 'lgs. 6 and .6. I

'Iwill first describe the form of the invention illustrated in Figs. 5, 6 and '1, since the liner bonding clamp shown therein is somewhat simpler than that illustrated'in Figs. 2, 3 and 4. 20 I 'lg. 5 illustrates a pairof edgewise adjacent wall panels each comprising a multiple ply or laminated facing II and, an angleiron' bounding frame comprising horizontallimbs II and verti cal'limbs i2, The vertical limbs "of the bounding frames of adjacent Panels lie in contact with each other and are formed with upper and lower registering holes it and I4. Extending across the bounding frames of the panels between thepairs of registering holes I! and I4 is The clamp which binds the liner to the bounding frames comprises a generally U-shaped mem her-preferably made as a rod bent'to include parallel legs or limbs l6 and an oblique bi'ght Iportion II. The free ends of the legs it are v a '.-bent'laterally in the form of hooks 'II which a clamp having tension applying means'=adjust-,-

extend through the two pairs of registering holes and ll. Attached to one side of the U-shaped member'asby spot welding indicated at I! is a plate Iii formed with a laterally, oil'set intermediate portion 2| having an oblique outer edge that forms a wedge-shaped recess open on its inner side; Cooperating with this recess is a narrow wedge block 2 2 which isadapted to be driven through the recess, with its inner edge 22' in sliding contact with the outer edge of the liner ll.- With the'hooks'IB engaged in the holes I! and ll of the panel frame members, it is manifest thatthe driving of the wedge xfl-cre ates a longitudinal tension on the legs it of the clamp that causes the wedge to force the liner snugly-against the panel frames. In order to prevent the wedge 22 from'working Wand becoming loose in its sock t, 13cm;

wayaninnerportionofthesocketwallll along thelinell,thusprovidinganopening through be driven obliquely through the liner. To facilitate this, Ipreferablyprovidetheinneredgeof thewedge with vertically spaced notches 24, through any ofwhichanallflmaybedrivenintothe liner, thenailbeingpreferablydrivenonlypastway, as shownin Fig. 6. to facilitate its easy extraction later when taking down the form. The plurallty of notches 24 provides for slight irregularities or variations in the thickness of the liner It. 'l 'romtheforegoingitwiilbeseenthatthe above described clamp not only binds the liner totheframesofthepanelsbut,byreasonof tbecurvedform ofthehooks ll,the latteralso securely bond the adjacent limbs of adjacent frames to eachother.

Substantially the same above described form of clamp is used to bond together vertical and horisontal liners at their points of intersection. Referring to Fig. 1, 2O designates vertical liners which intersect the horizontal liners, It on the outer sides of the" latter, and for bonding these liners at their intersections a clamp such as shown in Figs. 6 and 'l' but with slightlylonger hooks I8 is employed in a horizontal position. the hooks ll being entered through a pair of holes inthe liner II on opposite sides of the vertical liner2i. when the wedge 22 is driven home, the two intersecting liners are manifestly securely locked together.

Referring now to Figs. 1 to4 inclusive, wherein I have shown the panels equipped with "wooden bounding frames-21 edge to edge, I employ, for bonding the horizontal liners i5 thereto, a modified form of clamp. shown in perspective detail in Fig. 4. Thisclamp employs the same U-shaped member with attached socket U plate 20 for the wedge 22 as described in connection with Figs. 5 to '7. But instead of the hooks II, or II, the free ends of the limbs l8 are formed with extensions'preferably at right angles with the limbs I! in the form of upper and lower narrow loops 28 and 29 each formed by doubling the rod or wire on itself and preferably spot welding the end to the base of the extension as indicated at 30 in Fig. 2. The loop-shaped extension 28 is somewhat longer than the extension 29, and both extensions enter registering holes 3| in the adiacent limbs of the panel frames 21, and project some distance beyond said holes, as clearly shown in Fig. 2. A wedge 32 is driven downwardly through the projecting portions of these loopshaped extensions 28 and 29, the vertical edge of the wedge having a bearing on the adjacent side of one of the frame members 21. And since the main limbs It of the clamp hug the opposite edge of the other frame member, not only is the clamp securely anchored at its inner end in the frame members, but the latter are securely bonded together by the wedge 32 in cooperation with the extensions 28 and 29.

In Figs. 1. 2 and 3-1 have shown the adjacent vertical limbs of the frame 21 as slightly spaced from each other by a narrow spacer strip 38 attached by tacks 34 to the facing I0 and the inner edge portion of one of the frame members 21. The spacing permits the passage between the limbs 21 of a rod, strap or other member that ties together the two opposed walls of the form;

and the spacing strip provides a tight joint at the facing oi the two panels preventing concrete working into the joint; the spacer being apertured forthe passage of the tie members.

I have herein shown the wedge blocks 22 and 22 as equipped on their lower, narrow ends with a foot II, the use of which is optional. Where the parts of the clamp are pre-assembled, as will usually be the case, the foot fl prevents the accidental disengagement of the wedge from its rccess be; socket during handling of the clamp Variations and modifications of the specific structures shown and described my be resorted to within the scope of the claims.

I claim:

1. A form liner clamp, comprising a U-shaped member adapted to straddle a liner and having anchoring means on the free ends of its two legs. a socket member rigidly secured to and crosswise of the two legs of said U-shaped member at the bight end of the. latter and having a wedgeshaped recess, and a wedge adapted to be driven into said recess in engaging relation with said socket member, with an edge of said wedge adapted to bear on said liner.

2. A form liner clamp, comprising a rod bent to form a U-shaped member adapted to straddle a liner, said member havingan'choring means on the free ends of its two legs, a socket member comprising a plate rigidly secured to and crosswise of the two legs of said U-shaDed member at the bight end of the latter and having its intermediate portion laterally oifset to form a wedge shaped recess, and a wedge adapted to be driven into said recess in engaging relation with said socket member, with an edge of said wedge adapted to bear on said liner. I

'3. A form liner clamp as defined in claim 1', wherein the-outer wall of the recess is partially cutaway to expose a portion of the wedge for the entrance of anal] to lock the wedge to the liner.

4. A form liner clamp as defined in claim 1, wherein the outer wall of the recess is partially cut away to expose an inner longitudinal edge portion of the wedge. and said inner edge portion has vertically s'paced notches for the reception of a nail to be driven into the liner.

5. A clamp for bonding together vertical and horizontal liners of a form wall at their intersection, comprising a U-shaped yoke adapted to straddle one of said liners, the legs of said yoke being long enough to extend partly across the other liner and having on their free ends hooks adapted to enter holes in said other liner, a socket member having a wedge-shaped recess secured to one side of the closed end of said yoke, and a wedge adapted to be driven into said recess in engaging relation with said socket member with an edge of said wedge adapted to bear onsaid'nrst named liner.

6. A clamp for bonding a liner of a form wall to a pair of adjacent limbs of adjacent panel frames and for bonding together said adjacent limbs,

comprising a U-shaped yoke adapted to straddle said liner and having on the free ends of its legs rectangular extensions in the form of narrow loops adapted to extend through and at their outer closed ends project beyond registering holes in said adjacent limbs, one of the projecting portions of said loops being longer than the other, a socket member having a wedge-shaped recess secured to one side of the closed end of said yoke, a wedge adapted to be driven into said recess in engaging relation with said socket member with an edge of said wedge adapted to bear on said liner, and a wedge adapted to be driver. thz'ough the projecting portions of said narrow loop extensions with an edge of said last named wedge adapted to bear on a side or one or said adjacent limbs of the panel frames.

7. A form liner clamp, comprising a rod bent to form a U-shaped member adapted to straddle a liner, said member having anchoring means on the free ends of its two legs and an oblique bight connecting the other ends of said legs. a socket member comprising a plate welded to one side of 10 said legs and bight and having its intermediate portion laterally oflset to form a wedge-shaped recess. and a wedge adapted to be driven into said recess in engaging relation with said socket member, with an edge of said wedge adapted to bear on said liner. the portion of said plate forming the outer wall of said recess being partially cut away to expose an inner edge portion of the wedge for the entrance 01' a nail to lock the wedge to the liner.

GEORGE B. B0800. 

